Calgene announced the resignation of Zachary Wochok...

Calgene announced the resignation of Zachary Wochok as president and chief operating officer.

Wochok became president and chief operating officer in June, 1989, when the agribusiness biotechnology firm acquired Plant Genetics Inc. He had been president of Plant Genetics.

The Davis-based company said the resignation came at the end of Wochok’s two-year contract.